Key Teaching Points

Question 1

nucleus

Answer 1

a positively charged region at the center of the atom

Question 2

protons

Answer 2

Positive Charge

Question 3

neutrons

Answer 3

Neutral charge

Question 4

electrons

Answer 4

Negative charge

Question 5

Alpha

Answer 5

2 protons+2 neutrons
+2 charge
stopped by paper

Question 6

Beta

Answer 6

Electron
-1 charge
stopped my a sheet of aluminuim

Question 7

Gamma

Answer 7

Electromagnetic Waves
0 charge
Reduces by a meter of lead or concrete

Question 8

radiocarbon

Answer 8

Carbon dating is a way of telling the age of a once living thing by measuring the amount of carbon inside of it

Question 9

Rutherford’s Gold Foil Experiment- What happened

Answer 9

When he shot a beam of alpha particles at a sheet of gold foil, a few of the particles were deflected

Question 10

Significance of Rutherford’s experiment

Answer 10

• atom has mostly empty space
• it has a nucleus
• the nucleus is small, heavy, positivly charged and in the center

Question 11

What did Marie and Pierre Curie measure radioactivity

Answer 11

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Question 12

reactant

Answer 12

Starting materials on the left hand side of the equation

Question 13

Product

Answer 13

The end result of the reaction and is written on the right hand side of the equation

Question 14

Role of energy in chemical reactions

Answer 14

breaking the bonds of the reactants or in the formation of new bonds.

Question 15

Exothermic

Answer 15

release energy from the chemicals into the surroundings ( Heat)
ie Handwarmers

Question 16

Endothermic

Answer 16

Absorbing energy from chemicals in the surroundings (cold)
Ie icepack

Question 17

conservation of mass

Answer 17

mass is neither created nor destroyed in chemical reactions

Question 18

Acids

Answer 18

A chemical that gives off hydrogen ions in water and forms salts by combining with certain metals

Question 19

Acid Metal Reaction

Answer 19

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Question 20

Acid Base Reaction

Answer 20

Neutralisation

Question 21

Acid Carbonate Reaction

Answer 21

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Question 22

Respiration

Answer 22

breathing
GLUCOSE+OXYGEN–> CARBON DIOXIDE+WATER+ENERGY

Question 23

Photosynthisis

Answer 23

Carbon Dioxide+water—sunlight–> glucose+oxygen

Question 24

microorganisms

Answer 24

an organism that is microscopic.
They help digest your food, protect you against infection and maintain your reproductive health

Question 25

predator

Answer 25

an animal that lives by killing and eating other animals

Question 26

Prey

Answer 26

an animal that is hunted or killed by another animal for food

Question 27

parasites

Answer 27

an animal or plant that lives in or on another animal or plant and gets food or protection from it.

Question 28

competitors

Answer 28

a set of interactions between different populations or individuals from the same population to get one or more resources from the ecosystem

Question 29

pollinators

Answer 29

pollina anything that helps carry pollen from the male part of the flower (stamen) to the female part of the same or another flower (stigma)tors

Question 30

Bushfire

Answer 30

an unplanned vegetation fire.

Question 31

drought

Answer 31

acute water shortage

Question 32

flooding

Answer 32

an overflow of water beyond the normal limits of a watercourse

Answer 33

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